94 4L60e torqu converter stuck in lock-up mode

[stpnt40]

I have a 94 1500 w/4L60e trans. The torque converter is engaged and will not disengage. I have changed the TCC solenoid and torque converter, no change. I unplugged the wiring harness from the trans, no change. I removed the valve body, everything looked O.K. I checked the TCC soleniod, it is getting a signal when the brake pedal is mashed. Could it be the pump?

[maxwedge]

Is the tcc valve stuck in it's bore, what symptoms are you getting?

[stpnt40]

When I put it in gear (forward or reverse) the truck stains to move and goes dead. No codes or service engine light.

[maxwedge]

That may not be the TQ, it could be trans is locked up with 2 units applied thus it stalls the engine, I assume it runs ok in nuetral? What did the fluid look like when you had it apart, same problem existed before.

[stpnt40]

Yes, it runs fine in park and neutral. The fluid looked and smelled ok. A couple of times when I came to a stop it would felt like the trans was trying to push me through a red light or stop sign, before it locked up for good. I'm pretty sure that it is not a bad torque converter.
Do you mean that it could be in two gears a the same time (forward and reverse)? Could the EMC be bad? I replaced it about 2 yrs. ago. Maybe I should just replace the whole transmission but I am afriad that I might still have the same problem if it's something else thats controlling the trans.

[maxwedge]

I think you need to have this looked at by a trans guy with the proper scanner, he can confirm solenoid operation, possible one is stuck on conflicting with another clutch pack or application.